/*********************************************************************************
 * Software License Agreement (BSD License)
 * Copyright (c) 2012, Carlos D. Correa (info@ngraph.org)
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of netzen nor the
 *    names of its contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *********************************************************************************/
#ifndef RENDERUTILS_H
#define RENDERUTILS_H

#include <math.h>
#include <string>
using namespace std;
extern int currentFontSize;
extern char currentFont[512];

typedef struct {
  int edgeWidth1;
  int edgeWidth2;
  float edgeAlpha1;
  float edgeAlpha2;
  int nodeBorder;
  float nodeAlpha;
  float nodeScale;
  string edgeColor;
  float factorUncertainty;
  int textWidth1, textWidth2;
  float textSize;
} VisInfo;

void parseVis(const char *file, VisInfo &info);

#define lerp(x,y,a) ((a)*(y) + (1-(a))*(x))
void superQuadric(float radius, float s, float r, float a, float b, bool line=false);
void semiSuperQuadric(float radius, float s, float r, float a, float b, bool line=false);
void circle(float radius, bool line=false);
void elongatedCircle(float r1, float radius, bool line=false);
void circle(float x, float y, float radius, bool line=false);
void fuzzyCircle(float radius1, float alpha1, float radius2, float alpha2, float r, float g, float b);


void shadowRectangle(float x, float y, float w, float h, float roundnessx, float roundnessy, float alpha = 0.25, float offset = 0.0);
void rectangleAndShadow(float x, float y, float w, float h, float roundness, float alpha = 0.25);
void roundRectangleLine(float x, float y, float w, float h, float roundnessx, float roundnessy = -1);
void roundRectangle(float x, float y, float w, float h, float roundnessx, float roundnessy =-1);

void donut(float radius1, float radius2, float a1 = 1.0, float a2 = 0.0, float r=1.0, float g=0.0, float b=0.0, bool line=false, float angle0 = 0, float angle1 = 2*M_PI);
void arc(float radius, float angle0 = 0, float angle1 = 2*M_PI);
void getBoundsText(int &x, int &y, int &w, int &h, const char *str, const char *font="Helvetica", int fontsize=currentFontSize, string style="normal");
void drawText(float x, float y, const char *str, const char  *font="Helvetica", int fontsize=currentFontSize, string style ="normal");
void drawText(float x, float y, float z, const char *msg, ...);
void drawRotatedText(float x, float y, float angle, const char *str, const char *font="Helvetica", int fontsize=currentFontSize);
void drawTextBold(float x, float y, const char *str, const char *font ="Helvetica", int fontsize=currentFontSize);
bool lines_intersect(float x1,float y1,float x2,float y2,float x3,float y3, float x4,float y4);
#endif
